@darius Spreadsheets are the modern BASIC: the only way most people know how to make a computer do a thing they want.

But the problem with powerful products designed for a niche, is that you can make a half-assed version of anything with them. So people do, constantly.

A PM at a pervious job had a GANTT chart in a spreadsheet, using cell sizes and background colors, which they updated by hand. There's a lot of that kind of thing out there.